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could we add that it is sometimes written with the greek symbol μ mu ? Olivier -- 11:22, 3 March 2006 (UTC)

Move discussion in process[edit]

There is a move discussion in progress on Talk:1 E-18 s which affects this page. Please participate on that page and not in this talk page section. Thank you. —RFC bot 21:49, 4 September 2009 (UTC)

nonsense removed[edit]

I removed this uncited dubious entry, because it made no sense ("a fifth"... of what?)

  • 4.63 microseconds – a fifth (a 60th of a 60th of a 60th of a second)

feel free to work out what it was supposed to mean, and put it back fixed.

I also removed this;

  • 277.8 microseconds – a fourth (a 60th of a 60th of a second), used in astronomical calculations by al-Biruni and Roger Bacon in 1000 and 1267 AD, respectively.[1][2]

which is also nonsense, and the references did not appear to support it either ("fourth" (and, for that matter, "fifth") were not used in the context of seconds, and every time they were used, it was hyphenated, like "fourth-part", in the context of an actual sentence explaining what it was a part of.

In reply to User: who removed the bits about "fourth" and "fifth" -- I am pretty sure it means 277.8 μs is the result of dividing an hour by 60, four times, or 277.8 = 1 hour / (60 ^ 4). Likewise 4.63 μs = 1 hour / (60 ^ 5). From looking at the Google Books version of the al-Biruni book, I also realized that this follows a logical progression from "seconds" and also explains why one abbreviation for seconds is two little apostrophes. If you will, hour = zeroth. Minute = first. Second = second. 16.667 ms = third. 277.8 μs = fourth. 4.63 μs = fifth. Furthermore, Sexagesimal says 'Until at least the 18th century, 1/60 of a second was called a "tierce" or "third".' Some references are given. I believe that 1 μs is something like 12 sixths, 57 sevenths, 36 eighths.
Despite figuring this out, I'm not sure how to work this back in to the article. --Officiallyover (talk) 17:05, 2 September 2015 (UTC)